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NSDL STEM Exchange Technical Overview

NSDL STEM Exchange Technical Overview. Getting Items into NSDL. Ingest Services OAI-PMH – Open Archives Initiative Protocol for Metadata Harvesting Web Feeds, RSS ingest Tools NCS – Out-of-the box tool for managing metadata collections in the NSDL

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NSDL STEM Exchange Technical Overview

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  1. NSDL STEM ExchangeTechnical Overview

  2. Getting Items into NSDL • Ingest Services • OAI-PMH – Open Archives Initiative Protocol for Metadata Harvesting • Web Feeds, RSS ingest • Tools • NCS – Out-of-the box tool for managing metadata collections in the NSDL • jOAI – Tool that enables existing systems and databases to provide metadata and paradata via OAI-PMH

  3. NSDL Technical Platform Key NSDL.orgLibrary search and browse UI Learning AppsScience Literacy Maps, CCS, etc. Partner 1, n Portals, learning apps, mobile apps, etc. Views and applications Views and learning applications Repository services and APIs Ingest tools and services Perform resource-centric search; retrieve metadata, annotations, and paradata for views Harvest resource metadata, annotations, and paradata SearchREST API (DDS) OAI-PMHData provider Public service APIs Combines resource metadata, annotations, and paradata NSDL Data Repository (NDR)Contains resources, resource metadata, annotations, and paradata for all NSDL collections Repositorysystem Writes metadata, annotations, and paradata into NSDL Ingests metadata, annotations, and paradata into NSDL Ingests metadata, annotations, and paradata into NSDL OAI-PMHIngest from partners NCSMetadata editor tool Web FeedsSelected partner feeds Ingest tools, services

  4. STEM Exchange Intel Learning Centre CTE Online Resource Profile Pageat NSDL Partner 1,n Partners share paradata back via OAI-PMH Perform resource-centric search; retrieve metadata, annotations, and paradata for views SearchREST API OAI-PMHData provider Combines resource metadata, annotations, and paradata NSDL Data Repository (NDR)Contains resources, resource metadata, annotations, and paradata for all NSDL collections OAI-PMHIngest paradata

  5. NSDL Handle Service • Unique ID assigned to each object in the repository: • Resource • Resource metadata • Paradata • Annotation • Collection Metadata • Handles are assigned on ingest • APIs allow look-up by handle or partner ID

  6. Search Service • Search API – The Digital Discovery System (DDS) • Search over NSDL resources, annotations, and paradata • Embed resources and search directly into web sites and learning applications • Customize views for specific audiences and contexts • Integrate with JavaScript on the client side or a host of technologies and frameworks on the server side like Drupal • Examples in use: • NSDL.org; Curriculum Customization Service; Middle School Portal 2 Pathway; SMILE Pathway; DLESE Pathway; STEM exchange; NSDL Science Literacy Maps; DLESE Earth Science Literacy Maps; NCAR Library; Intel Educator Centre; NASA portals, others…

  7. Search service client examples…

  8. Resource-Centric Search • REST Search Service • Request made with http • Response returns XML or JSON • Each search result represents a single resource • Each result returns: • Resource metadata from each partner collection that describes the resource • Paradata from each partner that describes the resource • Annotations from each partner that provides annotations • Collection metadata that describes each of the above sources

  9. Resource-Centric Search Result: Model ParadataFrom CTE Online EducationalResourceThe Capacity of the Planetshttp://www.pbs.org/teachers/mathline/concepts/space2/activity3.shtm Resource MetadataFrom Teachers Domain Key NSDL DC XML (nsdl_dc) Comm Annotation XML (comm_anno) Comm Paradata XML (comm_para) (proposed) ParadataFrom ICPALMS Resource MetadataFrom ComPADRE ParadataFrom Curriculum Customization Service Resource MetadataFrom Math Common Core AnnotationFrom ICPALMS AnnotationFrom Curriculum Customization Service AnnotationFrom CTE Online

  10. XML Samples

  11. Resource Profile Page

  12. NSDL Import/Resource Usage Statistics Screen Captures Center for the Advancement of Digital Resources in Education (CADRE)/Butte County Office of Education 1

  13. NSDL Import/Resource Usage Statistics Screen Captures Center for the Advancement of Digital Resources in Education (CADRE)/Butte County Office of Education 2

  14. NSDL Import/Resource Usage Statistics Screen Captures Center for the Advancement of Digital Resources in Education (CADRE)/Butte County Office of Education 3

  15. NSDL Import/Resource Usage Statistics Screen Captures Center for the Advancement of Digital Resources in Education (CADRE)/Butte County Office of Education 4

  16. NSDL Import/Resource Usage Statistics Screen Captures Center for the Advancement of Digital Resources in Education (CADRE)/Butte County Office of Education 5

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